Energy dissipation characteristics of particle dampers with obstacle grids

Hu, Yin; Zan, Hao; Guo, Yousong; Jiang, Jie; Xia, Zhaowang; Wen, Huabing; Peng, Zilong

doi:10.1016/j.ymssp.2023.110231

Cited by 10 publications

(2 citation statements)

References 44 publications

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“…Due to these combined mechanisms, the damping properties of granular damping elements exhibit high nonlinearity and complexity [30]. Several factors influence their damping characteristics, encompassing particle size, shape, and material [31], as well as container geometry and filling ratio [32,33]. The formation of force chains (chains of inter-particle contact forces) has a very important role in granular materials' behavior [34].…”

Section: Particle Damping Technologymentioning

confidence: 99%

Experimental Evaluation of a Granular Damping Element

Avdić,

Nagode,

Klemenc

et al. 2024

Polymers

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Due to their advantages—longer internal force delay compared to bulk materials, resistance to harsh conditions, damping of a wide frequency spectrum, insensitivity to ambient temperature, high reliability and low cost—granular materials are seen as an opportunity for the development of high-performance, lightweight vibration-damping elements (particle dampers). The performance of particle dampers is affected by numerous parameters, such as the base material, the size of the granules, the flowability, the initial prestress, etc. In this work, a series of experiments were performed on specimens with different combinations of influencing parameters. Energy-based design parameters were used to describe the overall vibration-damping performance. The results provided information for a deeper understanding of the dissipation mechanisms and their mutual correlation, as well as the influence of different parameters (base material, granule size and flowability) on the overall damping performance. A comparison of the performance of particle dampers with carbon steel and polyoxymethylene granules and conventional rubber dampers is given. The results show that the damping performance of particle dampers can be up to 4 times higher compared to conventional bulk material-based rubber dampers, even though rubber as a material has better vibration-damping properties than the two granular materials in particle dampers. However, when additional design features such as mass and stiffness are introduced, the results show that the overall performance of particle dampers with polyoxymethylene granules can be up to 3 times higher compared to particle dampers with carbon steel granules and conventional bulk material-based rubber dampers.

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Section: Particle Damping Technologymentioning

confidence: 99%

Experimental Evaluation of a Granular Damping Element

Avdić,

Nagode,

Klemenc

et al. 2024

Polymers

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“…Several passive control systems have been used in past studies to attenuate vibrations of structures and machines. Particle dampers belong in these systems, and their attractiveness [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] is based on their simplicity, low cost, and effectiveness in reducing the dynamic response of mechanical systems and machines. Lately, their use has been extended in the civil engineering area [17].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Multi-Compartment Particle Dampers for the Attenuation of Dynamic Vibrations

Papalou

2023

Vibration

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An experimental study was performed examining the effectiveness of a multi-compartment damper in attenuating the response of structures under random and earthquake excitations. The damper consisted of four compartments of unequal size; it was mounted on a small one-story steel structure. The same number of steel spherical particles were placed inside each compartment, resulting in filling area ratios (the total area of the squares around the projected particles divided by the area of the compartment) from 40% to 70%. The damper was effective in reducing the response displacement and acceleration of the structure considerably. The use of different filling area ratios enabled the damper to be effective for a wide range of excitation levels.

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